If $$I_x$$ and $$I_Y$$ are the moments of inertia of a section about X and Y axes, the polar moment of inertia of the section is

A

$$\frac{(I_x + I_y)}{2}$$

B

$$\frac{(I_x - I_y)}{2}$$

C

$$I_x + I_y$$

D

$$\frac{I_x}{I_y}$$